Majlinda Joxhe (University of Luxembourg) will present "The Effects of Twin Testosterone Transfer (TTT) on Females’ Schooling and Earnings : Evidence from Longitudinal Data"

Abstract : Retour ligne automatique
As commonly described in human biology, the PTT (Prenatal Testosterone Transfer) is somehow responsible for the masculinization of the genitals and the brain structure formation of the fetus. Mono-zygote female twins are less exposed to testosterone than those who have shared the 6 weeks of their fetus life with a male twin. The PTT hence, may determine to females with the opposite sex twin, different innate “abilities” that might influence IQ and performance. In this paper, I compare female twins vs female-male twins by employing longitudinal data from the Add Health Survey and use the TTT (Twin Testosterone Transfer) as identification strategy. Using individual, family, school and neighborhood information, I show that the net effects of TTT with respect to the school performance on the opposite-sex female twin are not significant. Instead, I find significant effects of TTT on the probability of completing high school or college. Furthermore, I show that TTT may decrease long-time earnings of the females twins thus, may contribute negatively in shrinking the gender wage gap.